I created a catalog for photos I shot over the weekend on a mac LR4. I flagged, rated and created a collection in that catalog. I want to transfer that info into my main catalog LR4 Win7. I imported my memory stick into my main catalog desktop and created a generic keyword, location info which is the same for all the photos. 1) How do I get the info into the main catalog from the laptop? 2) Do I have to delete the duplicate photos on the desktop or can I just get the info from the LR catalog on the laptop? Thanks for the help I'm concerned about messing up my desktop catalog.